Performance
Practice performance interview questions
Performance interviews start with a symptom. They check whether you measure before you rewrite.
Performance interview preparation is practice finding a bottleneck, choosing what to measure, and knowing when a cache or an index is the real fix. NerdBeing puts those scenarios in questions with explanations.
What performance interviews actually cover
A slow endpoint, a janky list, a hot lock, a chatty query. You are expected to say what you would profile, what a cache would hide, and what you would not optimise yet.
How to practice
Work through questions that ask you to predict cost or pick a first measurement. Then read why the tempting rewrite would not have helped.
What you practice
- Measurement
- Profiling
- Caching
- Indexes
- N+1 queries
- Rendering cost
- Backpressure
- Capacity
Questions about Performance interviews
What performance questions come up in interviews?
Why an endpoint is slow, whether to cache, how you would confirm a guess, and what you would change first. Frontend rounds add rendering cost; backend rounds add queries, locks, and I/O.
Does NerdBeing include production performance?
Yes. Performance sits next to debugging and production scenarios, not as a separate puzzle site.
Related topics
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